Math Is Fun Forum

Did we ever find out how old bobbym is? I only made it through the first 5 pages of this thread.

It's not really the kind of thing I was looking for, though if it's readable and targets CS students it might be worth a look.

This is exactly the kind of thing I'm looking for, though I don't think the page has been updated in 4 odd years - which is a pity.

I've had someone recommend Reinhard Diestel's "Graph Theory." The first chapter seems to cover most of what I'm interested in. I could probably read some of the later chapters to get an overview of the other stuff.

How do you do one of those spoiler tags?

Anyway, am I playing this game right?

(8!/7!)*(7!/6!)*(6!/5!)*(5!/4!)*(4!/3!)*(3!/2!)*(2!/1!)

That's a start! Once you've got that, you should divide both sides by

Notice that

and you should be able to use that second rule I gave you.

I think the Zebra puzzle can be formulated as a constraint satisfaction problem and solved that way.

It can also be solved very easily using logic programming. If you search for "Prolog zebra puzzle" (or similar) in Google, you should be able to find a 15-liner to solve it. Prolog's special trick is to use something called "backtracking," though that's a separate topic.

Edit: My bad. There's a 15-line Sudoku solver. I was about to post in a different thread about a Sudoku solver and got confused.